CN214937590U - Blast furnace top waste gas discharge and recovery device - Google Patents
Blast furnace top waste gas discharge and recovery device Download PDFInfo
- Publication number
- CN214937590U CN214937590U CN202120631439.XU CN202120631439U CN214937590U CN 214937590 U CN214937590 U CN 214937590U CN 202120631439 U CN202120631439 U CN 202120631439U CN 214937590 U CN214937590 U CN 214937590U
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- Prior art keywords
- pipeline
- gas
- branch pipe
- connecting valve
- thread
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- 238000011084 recovery Methods 0.000 title claims abstract description 32
- 239000002912 waste gas Substances 0.000 title claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 91
- 239000000428 dust Substances 0.000 claims abstract description 29
- 238000003466 welding Methods 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 5
- 239000003034 coal gas Substances 0.000 description 10
- 238000004064 recycling Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a blast furnace roof waste gas discharge recovery unit, including bell furnace roof, buffer tank, connecting valve and dust remover, the bell furnace roof is connected with material jar gas pipeline, the bell furnace roof is through material jar gas pipeline and dust remover intercommunication, the one end that the dust remover deviates from the bell furnace roof is connected with the connecting valve, be equipped with the branch pipe on the connecting valve, the connecting valve is connected with respectively through the branch pipe and diffuses in pipeline, gas recovery pipeline and the clean gas storage tank, the branch pipe is connected with the buffer tank through diffusing the pipeline, just the buffer tank deviates from the pipeline intercommunication between the one end of diffusing the pipeline and dust remover and the connecting valve, the branch pipe passes through gas recovery pipeline and clean gas pipe network intercommunication, the branch pipe is through pressurizing the pipeline and the interior intercommunication of clean gas storage tank. The utility model discloses possess can be to the abundant recycle's of furnace roof waste gas advantage.
Description
Technical Field
The utility model relates to the technical field of furnace top waste gas recovery, in particular to a blast furnace top waste gas discharge and recovery device.
Background
The pressure equalizing and bleeding of the charging bucket on the top of the blast furnace basically adopts twice pressure equalizing, wherein the first pressure equalizing adopts clean gas, and the second pressure equalizing adopts nitrogen. For large blast furnaces, the pressure-equalizing diffused gas is usually discharged directly after primary dust removal, and for medium and small blast furnaces, most of the pressure-equalizing diffused gas is discharged directly without dust removal. The traditional diffused gas treatment mode not only causes energy loss, but also causes environmental pollution. Along with the popularization of bell-less furnace tops, the pressure of the furnace tops is higher and higher, the amount of coal gas stored in a charging bucket of the furnace tops is increased, the discharge amount of diffused coal gas is increased, the influence on the environment is more and more obvious, meanwhile, the environmental awareness of people is strengthened, and therefore the recovery concept of the diffused coal gas of the diffusing bucket of the furnace tops of blast furnaces is provided. However, the recovery of the diffused gas is difficult and the economic value is not high, so that the method cannot be put into practice. In recent years, with the improvement of blast furnace iron-making technology and automation control level and the stricter and stricter national requirements on energy conservation and emission reduction, the problem of recycling the coal gas diffused by a blast furnace top charging bucket is newly mentioned, and various methods appear, but the technology is not mature enough and is not successfully applied. Along with the high importance of the country on energy conservation and emission reduction, the recycling of the coal gas diffused by the furnace top charging bucket is imperative. Therefore, how to design a purification mode of pressure-equalizing diffused gas can solve the problems of diffused purification and recovery of the pressure-equalizing gas and dust removal treatment of the gas, thereby realizing full recycling of the diffused gas and being a great problem in the technology for recovering the diffused gas of a charging bucket at the top of a blast furnace.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a blast furnace top waste gas discharge recovery unit possesses can be to the abundant recycle's of furnace top waste gas advantage, has solved along with the popularization of bell-less furnace top, and furnace top pressure is higher and higher, and the gas flow volume of storage in the furnace top material jar becomes great, and the discharge of diffusing gas also grows thereupon, also comes more and more obvious problem to the influence of environment.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a blast furnace roof waste gas discharge recovery unit, includes bell top, buffer tank, connecting valve and dust remover, the bell top is connected with material jar gas pipeline, the bell top passes through material jar gas pipeline and dust remover intercommunication, the one end that the dust remover deviates from the bell top is connected with the connecting valve, be equipped with the branch pipe on the connecting valve, the connecting valve is connected with respectively through the branch pipe and diffuses in pipeline, gas recovery pipeline and the clean gas storage tank, the branch pipe is connected with the buffer tank through diffusing the pipeline, just the buffer tank deviates from the pipeline intercommunication between diffusing pipeline's one end and dust remover and the connecting valve, the branch pipe passes through gas recovery pipeline and clean gas pipe network intercommunication, the branch pipe is through filling pressure pipeline and the interior intercommunication of clean gas storage tank.
Preferably, one end of the connecting valve is provided with a connecting pipe, and the connecting valve is communicated with a pipeline of the dust remover through the connecting pipe.
Preferably, the outside welding of branch pipe has the baffle, through the spacing fixed cover of installing of baffle on the branch pipe, set up first screw thread in the fixed cover.
Preferably, the outer side of the branch pipe is provided with a second thread, the thread distance between the second thread and the first thread is the same, and the thread directions of the first thread and the second thread are opposite.
Preferably, the branch pipe is meshed and connected with the internal threads of the threaded ends in the bleeding pipeline, the gas recovery pipeline and the clean gas storage tank through second threads.
Preferably, the fixed sleeve is meshed and connected with the external threads of the threaded ends in the diffusing pipeline, the gas recovery pipeline and the clean gas storage tank through first threads.
Compared with the prior art, the beneficial effects of the utility model are that: by arranging the connecting valve, the gas discharged from the bell-shaped furnace top is filtered by the dust remover and then is subjected to partial pressure by the connecting valve, one path is communicated with a clean gas pipe network through a branch pipe to facilitate the recycling of gas, the other path is communicated with a buffer tank through a diffusing pipeline and a one-way valve, the other end of the buffer tank is communicated with a pipeline between a connecting valve and a dust remover through the one-way valve, when in use, the coal gas with overlarge pressure is temporarily stored in the buffer tank, when the pressure is lower, the coal gas is introduced into the connecting pipe end of the connecting valve from the buffer tank, the other path of the connecting valve is communicated with the clean coal gas storage tank through the pressurizing pipeline, when the pressure of the gas discharged from the top of the bell jar is lower, the gas can be filled into the pipeline through the pressurizing pipeline and the clean gas storage tank, so that the connecting pipe end of the connecting valve is in negative pressure, thereby pumping out the coal gas in the pipeline behind the connecting valve and accelerating the coal gas conveying efficiency at low pressure.
Drawings
Fig. 1 is a schematic view of the structure of the present invention;
fig. 2 is a schematic view of the connection valve of the present invention.
In the figure: 1. a bell top; 2. a buffer tank; 3. a blow-off line; 4. a gas recovery pipeline; 5. a net gas pipe network; 6. a pressurizing pipeline; 7. a purified gas storage tank; 8. a connecting valve; 9. a dust remover; 10. a gas pipeline of the charging bucket; 11. a first thread; 12. a branch pipe; 13. a second thread; 14. a baffle plate; 15. a connecting pipe; 16. and (4) fixing sleeves.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to fig. 2, the present invention provides an embodiment:
a blast furnace top waste gas discharge and recovery device comprises a bell furnace top 1, a buffer tank 2, a connecting valve 8 and a dust remover 9, wherein the bell furnace top 1 is connected with a charging bucket gas pipeline 10, the bell furnace top 1 is communicated with the dust remover 9 through the charging bucket gas pipeline 10, one end of the dust remover 9, which is far away from the bell furnace top 1, is connected with the connecting valve 8, the gas discharged from the bell furnace top 1 is filtered by the dust remover 9 and then is subjected to partial pressure through the connecting valve 8, one path of the gas is communicated with a purified gas pipe network 5 through a branch pipe 12, the other path of the gas is communicated with the buffer tank 2 through a diffusing pipeline 3 and a one-way valve, the other end of the buffer tank 2 is communicated with a pipeline between the connecting valve 8 and the dust remover 9 through the one-way valve, when the blast furnace top waste gas with overlarge pressure is used, the gas is temporarily stored in the buffer tank 2, when the pressure is lower, the connecting pipe 15 end of the connecting valve 8 is introduced into the buffer tank 2, the other path of the connecting valve 8 is communicated with the purified gas storage tank through a charging pipeline 6, when the pressure of the gas discharged from the bell top 1 is low, the gas can be filled into the pipeline through the pressurizing pipeline 6 and the clean gas storage tank, the end of the connecting pipe 15 of the connecting valve 8 is in negative pressure, the gas in the pipeline behind the connecting valve 8 is further pumped out, the gas conveying efficiency during low pressure is accelerated, the connecting pipe 15 is arranged at one end of the connecting valve 8, the connecting valve 8 is communicated with the pipeline of the dust remover 9 through the connecting pipe 15, the branch pipe 12 is arranged on the connecting valve 8, the second thread 13 is arranged on the outer side of the branch pipe 12, the branch pipe 12 is meshed and connected with the internal threads of the thread ends in the diffusing pipeline 3, the gas recovery pipeline 4 and the clean gas storage tank 7 through the second thread 13, the thread space between the second thread 13 and the first thread 11 is the same, and the thread directions of the first thread 11 and the second thread 13 are opposite.
The outside welding of branch pipe 12 has baffle 14, it has fixed cover 16 to install through baffle 14 is spacing on branch pipe 12, fixed cover 16 is through first screw thread 11 and diffuse pipeline 3, the external screw thread meshing of the screw thread end of 7 is connected in gas recovery pipeline 4 and the clean gas storage tank, first screw thread 11 has been seted up in the fixed cover 16, connecting valve 8 is connected with diffuse pipeline 3 respectively through branch pipe 12, 7 in gas recovery pipeline 4 and the clean gas storage tank, branch pipe 12 is connected with buffer tank 2 through diffuse pipeline 3, and buffer tank 2 deviates from the pipeline intercommunication between diffuse pipeline 3's one end and dust remover 9 and the connecting valve 8, branch pipe 12 passes through gas recovery pipeline 4 and clean gas pipe network 5 intercommunication, branch pipe 12 is through pressurizing pipeline 6 and the interior 7 intercommunication of clean gas storage tank.
The working principle is as follows: the gas discharged from the bell jar top 1 is filtered by a dust remover 9 and then is divided by a connecting valve 8, one path of the gas is communicated with a clean gas pipe network 5 through a branch pipe 12 to facilitate recycling of the gas, the other path of the gas is communicated with a buffer tank 2 through a diffusing pipeline 3 and a one-way valve, the other end of the buffer tank 2 is communicated with a pipeline between the connecting valve 8 and the dust remover 9 through the one-way valve, when in use, the gas with overlarge pressure is temporarily stored in the buffer tank 2, when the pressure is lower, the gas is introduced into a connecting pipe 15 end of the connecting valve 8 from the buffer tank 2, the other path of the connecting valve 8 is communicated with a clean gas storage tank through a pressurizing pipeline 6, when the pressure of the gas discharged from the bell jar top 1 is lower, the gas can be filled into the pipeline through the pressurizing pipeline 6 and the clean gas storage tank, so that the connecting pipe 15 end of the connecting valve 8 is in a negative pressure state, and the gas in the pipeline behind the connecting valve 8 is further extracted, accelerating the gas conveying efficiency at low pressure.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a blast furnace roof waste gas discharge recovery unit, includes bell furnace roof (1), buffer tank (2), connecting valve (8) and dust remover (9), its characterized in that: the bell top (1) is connected with a charging bucket gas pipeline (10), the bell top (1) is communicated with a dust remover (9) through the charging bucket gas pipeline (10), one end of the dust remover (9) departing from the bell jar top (1) is connected with a connecting valve (8), the connecting valve (8) is provided with a branch pipe (12), the connecting valve (8) is respectively connected with a diffusing pipeline (3), a gas recovery pipeline (4) and a clean gas storage tank (7) through the branch pipe (12), the branch pipe (12) is connected with a buffer tank (2) through a diffusing pipeline (3), and one end of the buffer tank (2) departing from the diffusion pipeline (3) is communicated with a pipeline between the dust remover (9) and the connecting valve (8), the branch pipe (12) is communicated with a clean gas pipe network (5) through a gas recovery pipeline (4), the branch pipe (12) is communicated with the purified gas storage tank (7) through a pressurizing pipeline (6).
2. The blast furnace top exhaust gas discharge and recovery device according to claim 1, wherein: one end of the connecting valve (8) is provided with a connecting pipe (15), and the connecting valve (8) is communicated with a pipeline of the dust remover (9) through the connecting pipe (15).
3. The blast furnace top exhaust gas discharge and recovery device according to claim 1, wherein: the outside welding of branch pipe (12) has baffle (14), branch pipe (12) are gone up and are installed fixed cover (16) through baffle (14) spacing, first screw thread (11) have been seted up in fixed cover (16).
4. The blast furnace top exhaust gas discharge and recovery device according to claim 1, wherein: and a second thread (13) is formed on the outer side of the branch pipe (12), the thread pitch of the second thread (13) is the same as that of the first thread (11), and the thread directions of the first thread (11) and the second thread (13) are opposite.
5. The blast furnace top gas discharge and recovery device according to claim 4, wherein: the branch pipe (12) is meshed and connected with the inner threads of the threaded ends of the diffusion pipeline (3), the gas recovery pipeline (4) and the clean gas storage tank (7) through second threads (13).
6. The blast furnace top gas discharge and recovery device according to claim 3, wherein: the fixed sleeve (16) is meshed and connected with the external threads of the threaded ends of the diffusing pipeline (3), the gas recovery pipeline (4) and the clean gas storage tank (7) through the first threads (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120631439.XU CN214937590U (en) | 2021-03-29 | 2021-03-29 | Blast furnace top waste gas discharge and recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120631439.XU CN214937590U (en) | 2021-03-29 | 2021-03-29 | Blast furnace top waste gas discharge and recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214937590U true CN214937590U (en) | 2021-11-30 |
Family
ID=79039335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120631439.XU Expired - Fee Related CN214937590U (en) | 2021-03-29 | 2021-03-29 | Blast furnace top waste gas discharge and recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214937590U (en) |
-
2021
- 2021-03-29 CN CN202120631439.XU patent/CN214937590U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211130 |
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| CF01 | Termination of patent right due to non-payment of annual fee |